Disposable Y-type puncture drainage tube

Abstract

The present invention provides a disposable Y-type puncture drainage tube, which is composed of a hard puncture tube core composed of a nut and a metal hollow needle and a hollow transparent soft sleeve composed of a side channel, a three-way switch, a hollow pipe, an arc base, a slot, a butterfly wing, a drainage head, a side hole, a detachable nut, an arrow and a groove. The present invention has a reasonable design, convenient and easy-to-obtain materials, low manufacturing cost, and convenient operation. It only needs to cover the purse string suture on the aorta twice to complete the operation of fixing the puncture drainage tube. The stability is strong, the butterfly-shaped widening on both sides of the short axis of the base increases the contact area with the aorta, and the long axis of the base is consistent with the circumferential direction of the aorta, so that the Y-type puncture drainage tube is not easy to twist and loose, and is not easy to cause aortic adventitia tearing, and does not affect other operations. The drainage head at the bottom naturally deviates to the root of the aorta to avoid the traction or even clamping of the upper aortic clamp, ensuring the effect of cardioplegia perfusion and the exhaust effect at the end of the operation.

Description

Technical Field

[0001] The invention belongs to a medical auxiliary device, and in particular relates to a disposable Y-shaped puncture drainage tube, which is mainly used for cardiac and large blood vessel surgery. Background Art

[0002] The heart is one of the most important organs in the body of vertebrates. Its main function is to promote blood flow, provide sufficient blood flow to organs and tissues to supply oxygen and various nutrients, and take away the end products of metabolism (such as carbon dioxide, inorganic salts, urea and uric acid, etc.) so that cells can maintain normal metabolism and function. When there is a problem with the heart, there will be systemic blood supply and reflux disorders, chest pain, shortness of breath, fatigue, palpitations, dizziness, syncope, etc. Many of these problems are caused by organic heart disease, which requires heart surgery to achieve the purpose of repair or replacement. Cardiac surgery cannot be done without extracorporeal circulation. Extracorporeal circulation is a life support technology that uses a series of special artificial devices to drain the returning venous blood to the outside of the body, exchange gases through artificial methods, adjust the temperature and filter, and then return it to the body's arterial system. According to statistics, the total number of extracorporeal circulation surgeries in China in 2017 was about 160,000. With extracorporeal circulation, the blood in the heart can be emptied, allowing surgeons to clearly see the diseased heart structure and achieve the purpose of repairing the heart. To achieve this process, the heart must also be stopped and allowed to tolerate ischemia during surgery for a long time. This requires that the cardioplegia solution and myocardial protection solution be perfused into the heart through the aortic root cannula, and the residual gas in the heart needs to be discharged during the heart's recovery process. This device is called a myocardial protection solution perfusion tube, a cardioplegia tube, or simply referred to as a Y tube. The cardioplegia tube currently used on the market consists of transparent PVC multiple joints of different configurations, which are straight, Y-shaped or four-way, and are connected together by transparent flexible PVC tubes of appropriate length. The main material is polyvinyl chloride. These cardioplegia tubes have the following problems in clinical use: 1) inconvenient operation. At present, during the cannulation and fixation process of the cardioplegia tube, it is necessary to put at least four aortic purse-string sutures to completely fix the cardioplegia tube on the aorta, and in the process of putting the sutures to the side holes at both ends of the long axis of the cardioplegia tube, it is easy to cause the sutures to slip out of the side holes or because the purse-string sutures are too large or too small to fix the four suture ends, thereby causing the cardioplegia tube to slip out during the operation. When the cardioplegia tube is removed after extracorporeal circulation, the four suture ends on the base of the cardioplegia tube often cannot be clamped with tweezers due to design defects, and the position of the cardioplegia tube needs to be repeatedly adjusted to loosen the sutures, which will greatly increase the risk of aortic bleeding after the cardioplegia tube is removed. 2) Instability. The slender design of the base on the aortic root easily causes the lower section of the cardioplegia tube to swing left and right in the short axis direction, and it cannot be stably perpendicular to the aorta. In addition, the current design and use method of the cardioplegia tube is that the long axis is consistent with the direction of the ascending aorta, and the long axis direction of the purse string suture that fixes the base is perpendicular to the long axis of the base. Such an inverted funnel-shaped fixed state design is also easy to cause the base to rotate. It is easy to cause the bottom end of the cardioplegia tube to leak blood from the side or slip out of the aorta. In addition, the inverted funnel-shaped fixed state design between the suture and the base is also easy to cause the aortic purse string suture to tear the aortic adventitia and cause severe bleeding at the puncture point.Another important design flaw is that the base is flat, while the actual aorta is round, and the two do not fit tightly, which increases the instability of the cardioplegia tube. 3) Affecting other operations. The space in the ascending aorta is limited, and many operations must be completed in these areas, such as aortic incision and clamping of the blocking clamp. The current design and use method of the cardioplegia tube is that the long axis is consistent with the direction of the ascending aorta, which will affect other operations due to the direction of the cardioplegia tube. 4) Poor perfusion and exhaust of the cardioplegia solution. Since the hose inserted into the aorta at the bottom is perpendicular to the aorta, this thin hose is easily disturbed by pressure or operation on both sides, especially the influence of the upper blocking clamp. For example, the tension formed by the blocking clamp will cause deformation, resulting in poor perfusion or drainage, or even clamped together by the blocking clamp, which seriously affects the operation and safety of the operation. Summary of the invention

[0003] The purpose of the present invention is to provide a disposable Y-shaped puncture drainage tube, which is mainly composed of a hollow transparent soft sleeve and a hard puncture tube core, both of which are sleeve structures, and the ends of the sleeve structure are connected by a nut structure, and the overall shape is similar to a Y shape. Specifically, it is composed of a nut 1 connected to a metal hollow needle, a metal hollow needle 2, a side channel 3, a three-way switch 4, a long straight hollow pipe 5, an arc base 6, an inverted mushroom head-shaped slot 7, a butterfly wing 8, a naturally bendable drainage head 9, a side hole 10, a detachable nut 11, an arrow 12 indicating the deflection direction of the drainage head, and a groove 13 on the base. The nut 1 connected to the metal hollow needle and the metal hollow needle 2 constitute a hard puncture tube core, and the two constitute an integral connection and cannot be separated; the side channel 3, the three-way switch 4, the hollow pipe 5, the arc base 6, the inverted mushroom head-shaped slot 7, the butterfly wing 8, the naturally bendable drainage head 9, the side hole 10, the detachable nut 11, the arrow 12 indicating the deflection direction of the drainage head and the groove 13 on the base constitute a hollow transparent soft sleeve. The hollow pipe (5) is sleeved outside the metal hollow needle (2), and a side channel 3 is opened on the upper section of the hollow pipe 5. The opening of the side channel 3 has a screw mouth that is suitable for the detachable nut 11, and the hollow pipe 5 and the side channel 3 are integrated into a T shape. The nut 1 and the hollow needle 2 are fixed together, and the threaded mouth of the nut 1 is suitable for the hollow pipe 5. When opened, the hollow needle 2 can be pulled out.

[0004] The hollow transparent soft sleeve can be divided into 5 parts, which are respectively a side channel 3, a three-way switch 4, a hollow pipe 5, an arc base 6 and a drainage head 9 from top to bottom. These 5 parts are fixedly connected and cannot be separated. The hollow pipe 5 runs through the arc base 6 and is connected to the drainage head 9. The three parts are connected as one and cannot be separated. The diameter of the drainage head 9 is smaller than the diameter of the hollow pipe 5, and the hollow pipe 5 is sleeved outside the metal hollow needle 2. The metal hollow needle 2 is used to pierce the blood vessel wall, the Y-shaped hollow drainage tube is used to perfuse the cardioplegia solution to the aortic root (the blood flow direction is from point A→point C→point D→point E) and to attract the blood and gas of the aortic root (the blood flow direction is from point E→point D→point C→point B), and the three-way switch 4 is used to control the perfusion or drainage direction of the liquid, that is, to control the connection between point A and point E or the connection between point B and point E.

[0005] The four symmetrical slots 7 on the arc base 6 are in the shape of an inverted mushroom head and are symmetrically arranged in the short axis direction. This slot design helps the operator to easily fix the purse string and is not likely to cause the purse string to slip off. It can adapt to the size of different purse strings without causing the aortic adventitia to tear. At the same time, the long axis direction of the arc base 6 is basically parallel to the direction of the aortic clamp and the aortic incision, which can leave valuable space for the aortic clamp and the aortic incision. The arc base 6 is arc-shaped ( Figure 26), which is consistent with the circular structure of the aorta, can better stabilize the Y-type puncture drainage tube firmly on the aorta, and is not easy to cause the tube to loosen or slip out. The base has two long wings in the long axis direction, which are consistent with the direction of the groove. Short butterfly wings 8 protruding outward are arranged on both sides of the middle short axis direction, which can play a role in increasing the stability of the base, so that the base can be very stably attached to the outer wall of the aorta, and it is not easy to cause the porous curved drainage head 9 under the arc base 6 to slip out of the aorta. The drainage head 9 under the arc base 6 is provided with multiple side holes 10, which can prevent the drainage tube from being blocked. The drainage head 9 is made of the same polyvinyl chloride material as the hollow pipe 5 and the arc base 6, and can be naturally bent to be in a quarter-circular arc shape. The overall short axis direction is fixed to one side, that is, the direction of the aortic root (the drainage head 9 is formed into an arc structure with a fixed direction of bending when it is manufactured. Because the material is relatively soft, it is straightened after a hard metal hollow needle 2 is inserted, and then when the hollow needle 2 is pulled out, it returns to an arc-shaped bending structure). An arrow 12 indicating the direction of the drainage head is set on the arc base 6. The position of the arrow 12 on the arc base 6 is the same as the direction of the drainage head 9. Because the final working direction of the drainage head 9 is toward the heart, when it is inserted into the aorta, the operator cannot see the drainage head 9 and can only judge whether the direction is correct by the external indicating arrow 12. Therefore, after the metal hollow needle 2 is pulled out, the natural direction of the drainage head 9 at the bottom is the direction of the aortic root. The arc-shaped base 6 has a long groove 13 in the center of the two side slots 7 in the long axis direction, which makes it convenient for the operator to adjust and remove the upper purse string by the tip clamp of the forceps at any time during the operation.

[0006] The above technical solution of the present invention has the following advantages: First, it is easy to process and manufacture. The disposable Y-shaped puncture drainage tube is composed of a transparent soft sleeve and a hard puncture tube core, which can be processed separately and then simply assembled. The required materials are not rare materials, which are easy to obtain and cost-controlled. Second, it is easy to operate. The optimized design of the base can facilitate the operator to complete the intubation operation more easily. It is only necessary to put the purse-string suture on the aorta on the base twice to complete the operation of fixing the puncture drainage tube, instead of the original at least 4 operations; in addition, the arc-shaped base has a long groove in the center of the two side slots in the long axis direction, which makes it convenient for the operator to adjust and remove the upper purse-string through the tip clamp of the tweezers at any time during the operation. Third, it has strong stability. The butterfly-shaped widening on both sides of the short axis of the base increases the contact area with the aorta. At the same time, the design that the long axis of the base is consistent with the circumferential direction of the aorta cancels the funnel-shaped fixed state, which can make the Y-type puncture drainage tube not easy to twist and loosen, and not easy to cause aortic adventitia tearing, and finally significantly increase the stability of the drainage tube on the aorta; Fourth, it does not affect other operations. The current long axis of the base is consistent with the circumferential direction of the aorta. This operation design can minimize the longitudinal space occupied by the aorta, without affecting other operations and is not affected by other operations. Fifth, the cardioplegia fluid infusion and exhaust effect is good. The design of the drainage head at the bottom naturally biased towards the root of the aorta avoids the traction or even clamping of the upper aortic clamp, ensuring the cardioplegia fluid infusion effect and the exhaust effect at the end of the operation.

[0007] Therefore, the disposable Y-shaped puncture drainage tube provided by the present invention can make it easier for the operator to operate the cardioplegia solution injection, and can easily adjust the purse string suture 14 on the aorta to achieve the purpose of stable fixation on the ascending aorta, leaving very valuable space for the operation of the key parts of the ascending aorta, making cardiac surgery safer and more convenient (see Figure 7a-7d The invention has reasonable design, convenient processing and manufacturing, low cost, and is convenient for the operator to complete the intubation operation more easily. It is suitable for practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a 45-degree bird's-eye view schematic diagram of the present invention (when the transparent soft sleeve and the puncture tube core are connected).

[0009] Figure 2 It is a plan view schematic diagram of the invention (when the transparent soft sleeve and the puncture tube core are connected).

[0010] Figure 3 yes Figure 1 Schematic diagram of the puncture stylet shown.

[0011] Figure 4 yes Figure 1Schematic diagram of the transparent soft sleeve shown (the core has been pulled out).

[0012] Figure 5 yes Figure 1 The schematic diagram of the base structure shown (viewed from the top), in which the dotted frame X is the long wings of the base, two of which are symmetrical.

[0013] Figure 6 yes Figure 5 Schematic diagram of the groove structure on the base shown (section A).

[0014] Figure 7a A purse-string suture 14 is made on the ascending aorta, and then the Y-tube is adjusted above the purse-string using the arrow 12 indicating the direction of the drainage head deviation as a direction mark; Figure 7b The Y tube penetrates the aortic wall along the center of the purse string, and then the two ends of the purse string suture are sheathed in the inverted mushroom-shaped slot 7 on the base 6; Figure 7c After the hollow needle 2 is pulled out, the drainage head 9 is deflected toward the aorta root, wherein the base 6 is not shown; Figure 7d This is a schematic diagram of the working status of the Y-tube after the Y-tube insertion operation is completed.

[0015] In the figure, 1: nut connecting the metal hollow needle; 2: metal hollow needle; 3: L-shaped pipe with screw threads on both ends; 4: three-way switch; 5: long straight hollow pipe; 6: curved base; 7: inverted mushroom head-shaped slot; 8: butterfly wing; 9: naturally bendable drainage head; 10: side hole; 11: removable nut; 12: arrow indicating the direction of drainage head deviation; 13: groove on the base; 14: purse string suture above the ascending aorta. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "front", "rear", "left", "right", "horizontal", "vertical" and the like indicate positions or location relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] Example 1

[0019] See also Figure 1-6A disposable Y-shaped puncture drainage tube is mainly composed of a hollow transparent soft sleeve and a hard puncture tube core, both of which are sleeve structures, and the ends of the sleeve structure are connected by a nut structure, and the overall shape is similar to a Y shape. It is specifically composed of a nut 1 connected to a metal hollow needle, a metal hollow needle 2, a side channel 3, a three-way switch 4, a long straight hollow pipe 5, an arc base 6, an inverted mushroom head-shaped slot 7, a butterfly wing 8, a naturally bendable drainage head 9, a side hole 10, a detachable nut 11, an arrow 12 indicating the deflection direction of the drainage head, and a groove 13 on the base. The nut 1 connected to the metal hollow needle and the metal hollow needle 2 constitute a hard puncture tube core, and the two are connected as a whole and cannot be separated; the pipeline 3, the three-way switch 4, the long straight hollow pipeline 5, the arc base 6, the inverted mushroom head-shaped slot 7, the butterfly wing 8, the naturally bendable drainage head 9, the side hole 10, the detachable nut 11, the arrow 12 indicating the deflection direction of the drainage head and the groove 13 on the base constitute a hollow transparent soft sleeve. The hollow pipeline (5) is sleeved outside the metal hollow needle (2), and a side channel 3 is opened in the upper section of the hollow pipeline 5. The opening of the side channel 3 has a screw mouth that is suitable for the detachable nut 11, and the hollow pipeline 5 and the side channel 3 are integrated into a T shape. The nut 1 and the hollow needle 2 are fixed together, and the threaded mouth of the nut 1 is suitable for the hollow pipeline 5. When opened, the hollow needle 2 can be drawn out.

[0020] The hollow transparent soft sleeve can be divided into 5 parts, which are respectively a side channel 3, a three-way switch 4, a hollow pipe 5, an arc base 6 and a drainage head 9 from top to bottom. These 5 parts are fixedly connected and cannot be separated. The hollow pipe 5 passes through the arc base 6 and is connected to the drainage head 9. The diameter of the drainage head 9 is smaller than the diameter of the hollow pipe 5. The hollow pipe 5 is sleeved outside the metal hollow needle 2. The metal hollow needle 2 is used to pierce the blood vessel wall. The Y-shaped hollow drainage tube is used to perfuse the cardioplegia solution into the aortic root (the blood flow direction is from point A→point C→point D→point E) and to attract blood and gas from the aortic root (the blood flow direction is from point E→point D→point C→point B). The three-way switch 4 is used to control the perfusion or drainage direction of the liquid, that is, to control the connection between point A and point E or the connection between point B and point E.

[0021] The four symmetrical slots 7 on the hollow drainage tube base 6 are in the shape of an inverted mushroom head and are symmetrically arranged in the short axis direction. This slot design helps the operator to easily fix the purse string and is not likely to cause the purse string to slip off. It can adapt to the size of different purse strings without causing the aortic adventitia to tear. At the same time, the long axis direction of the base 6 is basically parallel to the direction of the aortic clamp and the aortic incision, which can leave valuable space for the aortic clamp and the aortic incision. The base 6 is arc-shaped ( Figure 26), which is consistent with the circular structure of the aorta, can better stabilize the Y-shaped puncture drainage tube firmly on the aorta without causing the tube to loosen or slip out. The base has two long wings in the long axis direction (consistent with the direction of the groove 13, see Figure 5 The base 6 is provided with a plurality of side holes 10, and in this embodiment, four side holes are provided, and a side hole is provided at the bottom tip to prevent the drainage tube from being blocked. At the same time, the drainage head 9 can be naturally bent ( Figure 4 ), in a quarter-circular arc shape, with a fixed short-axis direction that is biased to one side as a whole, that is, the direction of the aorta root (the drainage head 9 is formed into an arc structure with a fixed direction of curvature when it is manufactured. Because the material is relatively soft, it is straightened after a hard metal hollow needle 2 is inserted, and then it returns to an arc-shaped curved structure after the hollow needle 2 is pulled out), and an arrow 12 indicating the direction of the drainage head is set on the upper transparent base 6, representing the direction of the natural deflection of the bottom drainage head 9 after the metal hollow needle 2 is pulled out. The base 6 has a long groove 13 in the center of the two side slots 7 in the long axis direction, which facilitates the operator to adjust and remove the upper purse string through the tip clamp of the tweezers at any time during the operation.

[0022] Example 2

[0023] See also Figure 1 to Figure 7a - Figure 7d The present invention provides a disposable Y-shaped puncture drainage tube, which includes a transparent soft sleeve and a hard hollow needle. The two are in a sleeve structure, and the ends are connected by a nut structure. The overall shape is approximately Y-shaped, and the two interfaces at the upper end of the Y (point A and point B) are used to connect the cardioplegia solution and the negative pressure suction tube respectively. In cardiac surgery, how to stop the heart from beating and keep it for half an hour or even longer requires the use of the device we designed, which can infuse myocardial protective fluid and cardioplegia solution into the coronary arteries of the heart; when the cardiac surgery is over, all the air in the heart needs to be discharged from the body, which also requires the use of the device we designed, which can be connected to an external negative pressure suction tube to discharge the gas in the heart and aorta. Next, we will combine Figure 7a-7d Let me explain the operation process. First, during the operation, we need to make an oval purse on the adventitia of the ascending aorta. Figure 7a14) (generally, the long axis of the elliptical purse is perpendicular to the long axis of the ascending aorta), so that the sutures exposed on the outside of the aorta at both ends of the ellipse can be easily buckled into the inverted mushroom-shaped slots 7 of the base 6 that will be used later. Then hold the Y tube in your right hand to the top of the ascending aorta purse, so that the long axis of the base is parallel to the long axis of the purse suture (perpendicular to the long axis of the ascending aorta), and then confirm the correct direction of the base by checking the indicator arrow 12 on the base (the arrow is facing the proximal end of the ascending aorta), and then buckle the sutures on both sides of the purse string 14 into the inverted mushroom-shaped slots 7 of the base 6 with tweezers, tighten the sutures and move them vertically to the outer wall of the aorta together with the Y-type puncture drainage tube until the entire layer of the aorta is penetrated ( Figure 7b Then tighten the suture through the rubber sleeve pre-placed on the purse string suture, loosen the puncture needle nut 1, and pull out the puncture tube core 2 together with the puncture needle nut. The arc base 6 fits tightly to the circular outer wall of the aorta. At the same time, the butterfly wings 8 on the base increase the contact area of ​​the base in the short axis direction, and the base is stably fixed on the outer wall of the aorta ( Figure 7d ), the drainage head 9 at the bottom naturally deviates to the aortic root ( Figure 7c ), cleverly avoiding the potential pulling and accidental clamping of the blocking clamp in the opposite direction (generally clamped 5mm away from the proximal end of the ascending aorta), ensuring the effective perfusion of the cardiac cardioplegia solution and the drainage and exhaust after surgery. Then point A can be connected to the external cardiac cardioplegia solution and myocardial protection solution to protect the heart from point A to point E ( Figure 7d When the operation is over and exhaust is needed, point B is connected to an external suction tube, which can effectively and continuously draw the air and blood near point E out of the heart ( Figure 7d ), reducing the risk of air embolism in the brain and abdominal organs. When it is necessary to remove the Y-shaped puncture drainage tube, the suture above the base groove 13 can be clamped with tweezers to easily loosen the binding line of the base, which is safe and effective and can easily pull out the drainage tube, and then the purse string is tied to stop the bleeding of the aortic puncture.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A disposable Y-shaped puncture drainage tube, characterized in that: The device is composed of a hollow transparent soft sleeve and a hard puncture tube core, the two are in a sleeve structure, and the overall shape is similar to a Y shape, wherein the hard puncture tube core is composed of a nut (1) and a metal hollow needle (2), the two are connected as a whole and cannot be separated, the hollow transparent soft sleeve is composed of a side channel (3), a three-way switch (4), a hollow pipe (5), an arc base (6), a slot (7), a butterfly wing (8), a drainage head (9), a side hole (10), a detachable nut (11), an arrow (12) and a groove (13), and the hollow pipe (5) is sleeved outside the metal hollow needle (2); The hollow pipe (5) passes through the arc-shaped base (6) and is connected with the drainage head (9), and the three are connected as one and cannot be separated; four symmetrical slots (7) are arranged on the arc-shaped base (6), the slots (7) are in the shape of an inverted mushroom head, and are symmetrically arranged in the direction of the short axis; two grooves (13) are arranged in the direction of the long axis of the arc-shaped base (6); the arc-shaped base (6) has two long wings in the direction of the long axis, which are consistent with the direction of the grooves (13); short butterfly wings (8) protruding outward are arranged on both sides of the middle of the arc-shaped base (6) in the direction of the short axis; the position where the arrow (12) is arranged on the arc-shaped base (6) is the same as the direction in which the drainage head (9) is inclined; the drainage head (9) is in a quarter-circular arc state, and is fixed in the direction of the short axis inclined to one side as a whole.

2. A disposable Y-shaped puncture drainage tube according to claim 1, characterized in that: A side channel (3) is provided at the upper section of the hollow pipe (5). The opening of the side channel (3) has a threaded opening which is adapted to a detachable nut (11). The hollow pipe (5) and the side channel (3) are integrated into a T-shape. The nut (1) and the metal hollow needle (2) are fixed together. The threaded opening of the nut (1) is adapted to the hollow pipe (5). When the nut (1) is opened, the metal hollow needle (2) can be pulled out.

3. A disposable Y-shaped puncture drainage tube according to claim 1, characterized in that: The hollow transparent soft sleeve is divided into five parts, which are, from top to bottom, a side channel (3), a three-way switch (4), a hollow pipe (5), an arc-shaped base (6) and a drainage head (9). These five parts are fixedly connected and cannot be separated. The diameter of the drainage head (9) is smaller than the diameter of the hollow pipe (5).

4. A disposable Y-shaped puncture drainage tube according to claim 1, characterized in that: The drainage head (9) below the arc-shaped base (6) is provided with a plurality of side holes (10); the diameter of the drainage head (9) is smaller than the diameter of the hollow pipe (5); and an arrow (12) indicating the deflection direction of the drainage head is provided on the arc-shaped base (6).

5. A disposable Y-shaped puncture drainage tube according to claim 1, characterized in that: A side channel (3) is provided at the upper section of the hollow pipe (5), and the opening of the side channel (3) is provided with threads which are adapted to be connected to a detachable nut (11).

6. A disposable Y-shaped puncture drainage tube according to claim 1, characterized in that: The drainage head (9), the hollow pipe (5) and the arc-shaped base (6) are made of polyvinyl chloride material.

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